Rock-drilling machine.



No. 874,608. PATENTED DEG. 24,1907. A. D. LEE & F. J. E. NELSON, JR.

3 SHEETS-SHEET l.

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HQCK DRILLING MACHINE.

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No. 874,608. PATENTED DEC. 24, 1907.

A. D. LEE & P. J. E. NELSON, JR. ROCK DRILLING MACHINE.

APPL IOATION FILED NOV. 14. 1906.

3 SHEETSSHEET 2.

'20. features of construction and arrangement of FRANCIS J.. NELSDN, Jr., citizens .of the ALVA n L E, OFBROOKLINE,

AND rRANorsJ'; Emerson, JR, or EAST Bosron, MASSACHUSETTS. I V

nO K-DRILLING MACHINE.

To all whom may ounce m: p

Be; it known that we; ALVA D. LEEand United States of America, and residents, -re

spectively, v v Norfolk, and East Boston, in thecountyof .Suiiolk, both in the State of Massachusetts, have invented certain new and useful Imrovements in Rook-Drilling hiiachines, of

which the following is a specification-.1

This inventionjrelatesjto rock cutting ma chines and particularly. to such, machinesadapted ,for cutting cylindrical unels througlithe rock. 5

Ithas for its principal object thefcutting of an annular groove through the rock leavmg o by means-of a movable carriage which-fob. lows in the path of the cutters. v p The invention consists in, certain novel a central core-uncut-which is. supported parts which will" be readily understood by Fig. l'repres'ents atransversevertical section Fig.

'cur'ed thereto an internal annular gear 26 I the revoluble intermediatecutters.

represents a transverse section'of the same. Fig. 8 represents an elevation of a revoluble I pulley mounted upon a central shaft 34; controlled reference to .the description of the drawings and to theclaims' hereinafter given;

Of the drawings:

features of this invention, the frontgpfortion being shown in section. Fig. 2 represents a' the lower carriage and its motor with the automatic feed and cutter plate rotating devices. Figja-repre'sents a.

plan of. a portion of front elevation of the'revoluble cutterplate.

.of the same on line 4-4 onFigfl; represents a sectioriv'on line 5-'5,on Fig. 3', drawn to an enlarged scale. Fig. 6 represents a section showing in elevation %ne ;of 1g; 7

cutter having a spiral cutting edge. Figs.'9

. and 10 represent, respectively, an elevation and an end view of oneof the rev'oluble reamer cutters. Fig. 1 l'represents a perspec-';

tive viewof the adjustable diam'ondcutters, and Fig. 12' represents an enlarged detail of the clutch mechanism.

Similar characters designate like parts throughout the several figures of t ne draw Inge,

Specification of Letters Patent, A nm-m fil d November 14, 190 "Serial m rsrseza ofBrook-line, inf. the county of Figure 1. represents a. side elevation of a machine embodying the the top carriage 18 clutch member 36 a ,inale clutch member 37 operated by means of .the shipper handle 38 to throw the pulley 32 into action to cause a movement to betrans- In the drawings, 1O represents a movable carriage to the under face ofwhich are secured a plurality of bearings 11, 1n each pair.

' Patented Dec, 24,1907.

either endof which is secured a flanged'truck wheel 13fadapted tecooperateiwith arail 14 of which mounted a revolub le shaft 12, on

on which said-carriage 10fi's a'daptedto be moved longitudinallyof' the cylindrical bore 15'cutthrough the rocks by means of the gears 12*; coacting with racks 13* extending ong'itudinallyof the bore 15 paralle'l with he rails 14. The upper face of the'oarriage 10 is provided with guides vNico-acting with 'project.iOnS 17 extendinglongitu'dinally: of a top carriagelS which is adapted for movement-longitudinally of the lower carriage 10. f "Rollers 19Iare' interposed bet'ween-the t'op carriage jl 8 and; the lower, carriage 10, said rollers sup orting the upper carriage .18 and reducing. tie friction between the two carriages to'a minimum.

The projectingmembers 17 andthe guides 16-are each provided witlrco-acting. inclined sides which prevents the upper carriage from x being separated from/ the ower carriage in an obvious manner. The-upper carriage 18 is provided with bearings 20: in which 1s revolubly' mounted the cylmdrical .member for tube 21.'

Annular members 22 are'secured to said member 21 between thebearings 2020 t0 prevent any 'lateral movement oft-he same. H

Secured to the front end of the tube or cylindrical member 21 by setscrews 23 or other similar means is an annular ribbed plate .24. This plate v24: is provided with a rearw'ardly extending :fiange'25 having out therein orsewith which meshe'sa pinion 27 mounted upon 'ashaft 28mountedin bearings 29 secured'to 9 0 This shaft 28 has-se K cured thereto a longflanged pulley30 connected by means of a belt 31 to a revoluble 32 freely revoluble uponia sleeve 33 by. any suitable motor 35.

mitted through the belt 31 in the direction indicated by the arrowson Fig. 1 to cause a rotation .of the annular plate 24.

"On'the san e sleeve 33 to which the pulley 32 is secured is also secured a smaller pulley V 39 connected by a cross belt 40 to a ulley 41 mounted upon the shaft 42 to the ront end of which is secured a worm 43 meshing with a rack 44 secured to the under face of the top carriage 18. As the late '24 is revolved through the medium 0 the revoluble pinion 27 and annular gear 26 the worm 43 is acting upon the rack 44 to move the plate forward as fast as the cutting of the rock will permit such movement 4 The clutch member 37 is keyed to the shaft 34 of the motor 35 and is provided with another male clutch member 45 coacting with a female clutch member 46 on a pulley 47. This ulley 47 is connected by a belt 48 with a puley 49 on the shaft 42 and by means of this connection the worm 43 may be reversed when the worm 43 has reached'the end of the rack 44 so that it may be moved to its normal position ready to move the top carriage 18 further forward. This is accomplished moving the lower carriage 1O forward duringthe reversal of the movement of the worm 43 so that it counteracts the tendency ofthe worm to move the top carriage 18 to the rear. The movement of thelower carriage forward is secured by means of the belt 50 interposed between a ulley 51 mounted upon the rear shaft 12 and a'pulley 52 secured to a shaft 53 mounted in bearings 53* in the rear bracket 54 in which it is adapted to be reciprocated. The rotation of the rear shaft 12 in this man ner causes the gears 12* to so act upon the stationary rack 13* as to efiect the required forward movement. 1 x

The shaft 53 has secured thereon the friction gears 55 and 56 which alternately engage with the friction gear 57 mounted upon the rear end of the motor shaft 34. It is obvious that by the shifting of" the friction gears 55 and 56 so that either one or the other alternately engage with the drive gear 57 the lower carriage 10 may be driven in either direction.

When the reversing feed mechanism is in operation the drive gear 57 is cooperating with the gear 55 to move the lower carriage forward but when the drive gear 57 is in en .gagement with the friction gear 56 to reverse themover'nent of the carriage to move it out of the bore the male clutch members 37 and 45 will be intermediate the female clutch. members and disengaging therefrom. These clutch members 37 and 45 will also be in an intermediate position when the drive gear57 is in'engagement with the friction gear 55-for the purpose of moving the carriageinto the bore at all times when it is not desired to change the relative positions of the worm 431 and rack 44. As the cutting continues and the carriage moves forward the truck-wheels 13 will soon run off of the front ends of the rails 14 and-in order to properly position the ..-fr0nt endof' the device when this has been done the carriage 10-is provided with beveled revoluble cutters 62 each having knife edges 63. adapted to cut the rock in advance of the front face of the plate 24. Y The axes of these cutters 62- revolve in bearings in the frame 61 embedded in the depressions 60, the frames 61 being sunk in said depressions sufficiently far to cause the axes of the cutters to be to the rear of the front face of said front plate. These frames are so located relative to each other that the cutters of each series overlap .one another so that as the plate 24 revolves against the face of the rock in advance there of all the surface of said rock comes in contact with said cutters The frames 61 on the outer and inner edge of the annular plate 24 are inserted atan angle to the face of the plate as clearly shown in Figs. 3 and 5 and these frames are made adjustable by means of the threaded members 64 which are adeptalways at the same distance from the center of the bore and thereby maintain it constantly atthe same diameter. The cutters 62 are provided with trunnions 65 which rest in pockets in the frames 61 and are prevented from being removed therefrom by means of the caps 66. The frames 61 are secured to the plate 24 by means of bolts 67. Each frame 61 is rovided with a plurality of cutters 62 which are freely revoluble therein, the

wheels 59 which engage the inner periphery -ed to keep the outer edge of the cutters 62 cutters in each frame being each of a different A form so that as the plate 24 revolves, the cutters in each frame will have a difierent action uponthe surface of the rock being cut.

The form of cutters used consists, first, of

a cutter the cutting edges of which extend circumferentially of the cutter member; second, of a cutter the cutting edges of which extend spirally of the cutter member inone direction; third, .a similar cutter the cutting .edgcs of which extend spirally in the opposite direction, and fourth, of a cutter mem her the cutting edges of which extend diagonally along the periphery of the cutter member from end to end. These latter cute ters are designated as reamer cutters for the reason that they act upon the material in the same manner that an ordinary reamer does. In each lnner series of cutters one of each of these forms-0f cutters is used so that as the pla'te1 24 revolves the surface of the rock opgosite the cutters will alternately come unerfthe action of these different forms of cutters to insure the rock being properly cut into and then broken away by means of the action of thecutting edges following which a'ct upon the projecting portions of the rock transversely of the previous cuts made. By I the'dust and chips may pass through into the bottomiof the bore already cut. 'A pipe 69 with a spray nozzle 70 is adapted to send a spray of water over the face of the rock'being cut by the cutter 62. a This water and the chips and dirt collected in the bottom of the bore already out passes through a pipe 71 in -.the bottonroiithe bore and'is pumped out, I

' with reversal of the worm feed is obtained by throwing the clutch 45 into contact with the through the rear end of the bore.

The device is-so constructed as to cutan annular groove in the rock leaving the inner core 7 2which passes through the cylindrical member 21, the rearend of said'core being supported by means of'the trucks 73inounted in brackets 74 secured to the upper faceof the upper "carriage 18. This core is broken off as desired and removed from the bore in a any desired manner. Tolrzeep the bores always at the right diameter the diamond'cut ters75 are provided which are mounted in a member 76"adjustably secured to the outer periphery" of the plate 24. Astheplate 24 revolves these diamond cutters clean out the corners andinsure that the bore is always of a the-proper diameter 'toadmit ofthe further advance of themachine.

The plate 24 is provided with a manhole 77 through which the frames 61 may be removed when thecutters are' out-of order. In

, order to remove these frames 61 the carriage is moved slightly to the rear and a man enters the bore in front of theplate 24 and removes any damaged section and calls fora! section to replace it which when inserted leaves the machine in condition for immew diate operation. I The male 'clutch'members 37 and are made integral and are splined to the shaft 34.. to revolve therewith but atthe same time have a movement "longitudinally thereof.

Theshaft 34 has two rings or collars 78- -79 adjustablysecured to it one on either side of said clutch members 37-45. of the clutch members 37*45 longitudinally of said shaft 34 until they contact with one of these collars 78 or 7 9 .Wlll cause the meshing or unmesh-ing of the cone gear-57-uuth'1ts- (mo-acting cone-gear 55 or 56 as the case may be. This longitudinal movement of'the clutch members 87,.45 is effected by means. of the shipping lever 38 which is secured to a Y collar 80 mounted in an annular depression in said clutch members so that thesemerm 1 an intermediate position with the cone gearbers 37 45 are free to revolve freely therein.

The -shipping lever 88 is shown in Fig. 2- in '57- in contact with thefriction: gear 55-.

While in this position the lower carriage 10 A movement 4 is caused to be moved forward without having any action on the various other parts. By shipping the friction gear56 (see Fig. 2)

'into contact with the cone gear 57 by means be reciprocated in its bearings 53* to cause the engagement of either the friction gear 55 or 56 with the friction gear 57.

A forward drive of the lower carriage 10 clutch 46 which drives the belt.48 by means of the pulley 47 thereby producing a forward movement of the lower carriage in themanner heretofore described. The plate 24 is at the same time moved in the reverse directions by means of the belts 40;and 31 'as has already been clearly set forth.

. Inorder to throw. the cone gear 57 out of contact withthe friction gear 55 or 56 the clutch member 37 may be'moved against the collar 78 to cause a longitudinal movement of the shaft 34-ii1itsbea'rings, this movement moving the cone gear 57 into a position where neither of. the friction gears 55 and 56 which may be moved into engagement there \with. This movement of the clutch member 45 will engage the female clutch member 46 l as well but the withdrawal of the member 45 from contact with the member 46 will cause no .movement on the cone gear 57 until the collar 78 is again "acted upon.

In'the operation of the invention rails 14 are placed in position 111 the direction in which itpis desired to operate and the machine is placed upon these rails and power is applied to the motor 35 to cause the machine to advance-against the rock desired to be operated upon.v As soon as the front plate 24 contacts with therock to be cut .thewhcels of the lower carriage are choclred to prevent back movement and the clutches are op- 'erated to rotate the plate and give it an advanee feed. As soonas the plate rotates the i-evoluble cutters of the various forms begin I I to cut and chip at the rock and cause it to be quickly .cut away, the chips and dust accu mulating therefrom being washed down by means of the water from the spray nozzle 7O.v

These pass through the various openings in &

the rear of the cutters and accumulate in the bottom of the bore from which they are pumped through the pipe 71. 1 The core in and is supported thereby and as its "rearend extends through the cylindri'caltube'. itijs broken off as desired and rem oved'from. the

bore. As has been already described-when'- the feed worm 45 reaches thelirnit of its movement in one direction, by-a reversal of the movement thereof and at the same time an advance movement of the lower carriage, the worm firs fed into its normal position ready to cause a further advance of the up' I This construction in rock drillrug-machines makes a very effective appaper carriage.

ratus for cutting tunnels for theuse of miners and is very effective in its operation, beingcapable of cutting through the hardest rocks with very little difficulty while the bore cut is always of the same diameter and if desired I the machine may be followed with a tubular casing to hold in position any material. cut through other than the self sustaining solid rock.' 1 From the foregoing it is believed the operation of the invention and its advantages will be understood without any further de- Having thus claim: v

1. In a rock drilling machine, the combination of an annular face plate provided with a plurality of depressions in its face; -means 'for rotating said plate; and a plurality of cutters secured in said depressions with their axes radial to the axis of saidplate and at different distances from said center thereby effecting in the revolution of said plate 'a cutting from the central opening to the outer periphery of said plate.

- 2; In a rock drilling machine, the combination of an annular plate; a plurality of frames distributed at various distances from the center over the face thereof; anda plurality of cutters in each frameeach mounted upon an independent axis. x

3. In a roclrzdrilling machine, the combi} nation of an annular plateja-plurality of frames secured to the face thereof at differcut distances from the center; a plurality of cutters in-each frame; and means for adjustplat'e.

4. In a rock drilling machine, the combination of an annular plate; a plurality of.

frames secured to the face thereof; a plurality of series of cutters on the face thereof; and a plurality of forms of cutters each I series.

described our invention, we

lng said frames relative to the axis of said.

ity of overlapping series of cutters on the .face thereof; and a plurality of forms ofcut- 'ters'in'each series.

6. In a rock drilling machine, the combination' of an annular face plate; a plurality of cutters revoluble on axes to the rear of said front face; and a plurality of diamond cutters secured to the outer periphery thereof. 4

' 7. In 'a roclr drilling machine, the combifront face having a plurality of depressions therein; a plurality of cutters-revoluble in said depressions; and a plurality of diamond cutters removably secured to the outer periphery thereofa, r 8. In a rock drilling machine, the combination of an annular face plate having a-continuous outer periphery corresponding to the diameter of the bore to be cut a plurality of cutters thereon extending from said'central opening to. the outer eriphery, the axes of said cutters being em edded in theface of said plate; and means for revolving said plate to-cut an annular groove in the rock.

9. In a rock drilling machine, the combination ofan annular plate; a plurality of cutters thereon, meansv for revolving said plate to cut an annular groove in the rock; and means separated from said plate and in the rear thereof for supporting the core thus formed.

10. In a rock drilling machine, the combination of an annular plate having a continuport for said plate revoluble therewith and having a bore of the same diameter as the central opening in said'plate adapted to support the core cut'from the rock; a gear on said plate; a revoluble pinion to drive said gear; and means for revolving said pinion.

11. In a rock. drilling machine, the combination of a movable carriage; a plurality of bearings thereon; a tubular revoluble mem- "ber mounted therein the bore of which is of run on the face of thebore; a plurality of bearings on said carriage; a tubular revoluble member mounted therein the bore of which is of the same diameter to that of said bore; an' annular face plate secured thereto the central openin of which corresponds in diameter to that of said bore; a plurality of nation of an annular plate provided with a ous outer periphery; a plurality of cutters on'the front face thereof; a cylindrical sup-- the same diameter throughout its-length; an

" rcor'respondin cutters on the outer face of said'plate; and means for revolving said plate.

13. In a rock' drilling machine, the combination of a movable carriage; .a top car' riage thereon movable longitudinally of the 4 lower carriage; a tubular, member revoluble inbetrrings onsaid top carriage and ha'ving a central bore of .equal diameter throughout; its length; a face plate secured to; saiditubu lar memb er having a central openi ng therein corresponding in diameter -to that ofsaid 5 tubular member;.a lurality ofcutters on" the outer face ofsaitl plate; and means for 1 movingsaid top carriage longitudinally. l5 l4. Inarockdrillingmachine; the combie" nation of a movable carriage; a top 'car riagethereon movable longitudinally of the lower carriage; a tubularmember revoluble inbearings on said top carriage land having a central bore ofequal diaiiietefthroughout I its length; a faceplate secured-t0 said tubu-i lar member having a central opening therein corresponding in diameter to that" of said tubular member; a'plurali'ty of cutters -on' moving said top; carriage longitudinally in either direction. v v 15. In a rock drillinginachine; thefc ombination of a movable carriage; a top carriage v thereon movable longitudinally of the lower 5 1 carriage; a rack'on'said'top carriage; arevoluble worrnon said lower carriage meshing .therewithja' tubular member revoluble in hearings on said top carriage and having a central bore of equal diameterj'throughout lar member having a central opening" therein in diameter to that of'said tubular member; a plurality of cutters on the outer face of said 'pl'ate;-, and means for .inoving said top carriage longitudinally in either direction] Q g l6. In a rock machine, the combi -.nation of a movable carriage; a top cars riage'thereon movablelongitudinally of the lower carriage; .rolls interpgsed "f etween. s'aid carriages; I a rack on sa1d toprcarriage; a revoluble wormj on said'fl'QWeK-Ycktr'riage meshing therewith; a tubular member revoluble in bearings on said top. carriage; an annular late secured tof-said tubular memher; a p urality of cutters on the outer .face. i

nation of a revolulole plate;.a plurality of of said plate; and means for moving said v, top carriage longitudinallyin either'direction; 17'. In-a rock drilling m'achinefithe combi-v nation of a-movable carriage; a topcarriage thereon movable longitudmallyof the lower ,carriage; rolls interposed 'betweensaid car.

' riages; guides secured toone'of said carriages co acting' with ways in the other; a rack on said top carriage; arevoluble .worm on'said lower carriage meshing therewith; a tubular memberflrevoluble' in bearings onsaid top carriage;- an anniilarplate secured to said the outer face of said plate; and means-for..-

ther'ewith; "a tubular member revoluble in its lengthj'a face platesecured-to said tubu nation' of a movable carriage; a top carriage thereon movable'longitudinally of the lower I es' tubular membeig'a plurality. of cutters on the outer'face of said plate and means for moving said top carriage longitudinally in either direction.

18. In a rock drilling machine, the combination ofa movable carriage; a top carriage thereon movable longitudinally of the lower carriage;"rolls interposed between said carriages; guides secured to one of said carriages co actin with ways the other; a motor :In'ounte 'upon the lower carriage; means for .moving the lower carriage longitudinally 1' thereby; a rackon. said top carriage; a revoluble worm on-said lower carriage meshing therewith; a tubular member revoluble in bearings on said top carriage; an annular plate secured to said tubular member; a plurality of cutters on;the outer face of said plate; and'means for-moving said top carriage longitudinally in either direction.

, 19. 'In a rock drilling machine,the combination ofa movable carriage; a'topcarriage thereon movable longitudinally of the lower carriage; rolls interposed between said carriages; guidessecured to one-of said carriages co-actm with ways'ln the. other; a motor mounte uponthe lower carriage;- means for moving the lower carriage longitudinally thereby a rack on said top carriage; a revoa lublefworm on said lower carriage meshing bearings. 1 1 Said top carriage; an annular plate securedtosaid tubular member; a plu rality of cutters on the outer face ofsaid plate; andmeans for movingsaid top carriage longitudinally in either direction.

20. In a rock drilling machine, the combicarriage ;'rolls interposed between said car'- riages guides secured to one of said carriages hearings on said top carriage; an annular plate secured to said tubular member; a, plurality of cutters on the outer face of said plateyandmeans for movin said top carriage'longitudmallyin either irection: 21.. In a rock .drillmg-macl1ine,'the combiframes distributed over the front faceof said plate 'a tdiiferent' distancesfrom its-center;

and 'a plurality of icu-tters having cutting .edgesin each frame,-the cutting edges of each 4 '22. In a rock drillingimachinathe combination of an annular plate; a plurality of framessecured toith'e face thereof at different distances from the 'center;fand a plurality of revolu'ble'. cutters each frame each revoluble upona'separate'axisv 23. In a, roekdrflling machine, the combination of an annular plate; a, plurality "of frames securedto the face thereof at difierent distances from the center; a, plurality of rev0--- 5 Iuble cutters in each frame; and means for Witnesses: adjustingsaid frames relative to the axis of EDNA C. CLEV LAND,

said plate. Y WALTER E. LOMBARD.

Signed by us at Boston, Mass, this 22d day of October, 1906.

ALVA 1). LEE. FRANK. J. E. NELSON, JR. 

